Using CMS to birth KEMP family birth centre perth

Hello has anybody gone through the CMS and birthed at the family birthing centre? I accidentally signed up to both (first time mum) and want to stay with my midwife from CMS but want to go to the family birth centre. Has anybody ever been turned back on the day - has it ever been full? I am low risk and approved for FBC ! Need to decide who to go with this week!!